# Action Potentials vs Shor's algorithm

The clearest difference is in-app purchases: Action Potentials at none against Shor's algorithm's 3. Action Potentials also leads on update cadence (every 3 weeks vs every 6 months) and iOS requirement (13.0 vs 16.0). On price, ads and device support there is nothing between them.

Both are free to download. Shor's algorithm sells 3 one-off in-app purchases. Action Potentials asks for nothing beyond the download.

Action Potentials ships an update every 3 weeks, Shor's algorithm every 6 months. The most recent releases landed on November 3, 2026 and November 12, 2026 respectively.

## The numbers

| Metric | Action Potentials | Shor's algorithm |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (13 ratings)](https://appshunter.io/ios/app/action-potentials/id1527893283/reviews)** | — |
| Number of ratings | **13** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 6 months |
| Monetization | Free | — |
| Size | 1 MB | 7 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Beau Forest](https://appshunter.io/developer/1527893285) | [Sungjun Kim](https://appshunter.io/developer/1602461985) |

## What reviewers say

### Action Potentials

[App page](https://appshunter.io/ios/app/action-potentials/id1527893283)

Explore the mechanics of action potentials in real-time. Adjust parameters and introduce various drugs to observe their impact on neuronal signaling. Choose between single event simulations or continuous manual current injections.

**Highlights:** Real-time action potential visualization, Adjustable simulation parameters, Drug effect simulation (lidocaine, tetrodotoxin, TEA), Single action potential mode, Continuous manual current injection

**Features:** macOS Compatibility

**In-app purchases:** none


### Shor's algorithm

[App page](https://appshunter.io/ios/app/shors-algorithm/id6472044082)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| coffee | $0.99 | one-time |
| latte | $4.99 | one-time |
| whopper set | $9.99 | one-time |


## Frequently asked questions

### Is Action Potentials free?

Action Potentials is free to download, with no in-app purchases.

### Is Shor's algorithm free?

Shor's algorithm is free to download, with in-app purchases available.

### Do Action Potentials or Shor's algorithm have ads?

Neither Action Potentials nor Shor's algorithm shows ads.

### Which is updated more often, Action Potentials or Shor's algorithm?

Action Potentials ships an update every 3 weeks, and Shor's algorithm every 6 months. Most recently, Action Potentials was updated on November 3, 2026 and Shor's algorithm on November 12, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*